Malaclemys terrapin (Schoepff 1793:64)

Holotype: Not located; illustrated in the original description (Pl. XV).

Testudo concentrica Shaw 1802:43

Holotype: Not located; illustrated in the original description (Fig. 9, top).

Testudo ocellata Link 1807:52

Holotype: Not located; illustrated in Bechstein (1800:Pl. 4, Fig. 2).

Emys concentrica polita Gray 1830:11

Syntypes (number uncertain): only one located; OUM 8475 (Nowak-Kemp & Fritz 2010:8). Testudo palustris LeConte 1830:113

Holotype: Not located; possibly originally in the ANSP, but not listed by Malnate (1971).

Emys macrocephalus Gray 1844:26

Holotype: Not located, but apparently in the BMNH and now lost ( Ernst & Bury 1982:3).